Skip to content
Heater buildout

Harvia Pro 20 Wood Sauna Stove

The Harvia Pro 20 is a floor standing wood stove for a medium sized sauna, made in Finland. It comes in six versions: the standard front fed stove, three with a water tank, and two that you feed from the room next door.

5.0 on Google across 80+ verified reviews

Member pricing is quoted directly with a specialist, and specifications and availability are confirmed on the same call.

Images: Harvia

Heater buildout

What’s in this buildout

A heater never arrives on its own. The buildout is everything it needs to heat a room.

Images: Harvia
  • The stove

    Harvia Pro 20, in the version your room calls for.

  • Chimney kit

    Professionally installed.

  • Sauna stones

    Included and required.

Sizing is matched to your sauna in consultation.

The build

What we handle

We source quality products that we stand behind, for you, not for the brand, and we build the room around them.

  • Site preparation

    Placement in the room, following the manufacturer's specification.

  • Delivery and placement

    Freight coordination to your site, and the stove placed in the room it heats.

  • Assembly

    Installed as part of the sauna build, with the stones loaded.

  • Protection

    Guards and clearances set at install and checked when we come back.

  • Support after the build

    Service and guidance after the build, from someone who picks up the phone in year three.

A barrel sauna half built in a sunny backyard, one man standing inside the waist-high walls and pointing toward the camera while a second, in a cap and sunglasses, looks over the far wall.
Site work. Longmont, Colorado.
A barrel sauna part way through assembly on its cradles, the floor laid and the front wall standing, with the remaining staves stacked on the patio alongside.
Barrel sauna, mid-assembly. Colorado.
The detail

What we can put in writing.

Anything not listed here is confirmed with you during the consultation rather than published as a guess.

Exterior dimensions
16.9"W x 20.1"D x 29.9 to 31.1"H
Family
Harvia Pro Series
Configurations
Pro 20 (Front fed floor stove with adjustable legs), Pro 20 ES (Adds a 20 liter water tank on the front), Pro 20 LS (Adds a fixed 30 liter water tank on the left side), Pro 20 RS (Adds a fixed 30 liter water tank on the right side), Pro 20 SL (Fed through the wall from the next room; the door can be hung to open either way), Pro 20 Duo (Fed through the wall, with a stainless casing and a glass fireplace door in the next room)
Fuel
Wood
Feeding
Front fed, or through the wall on the SL and Duo
Room volume
283 to 706 cu. ft.
Sauna stones
88 lbs
Water tank
20 liters on the ES, 30 liters on the LS and RS
Made in
Finland
Construction
Steel, graphite black casing with a stainless steel front
Door
Cast iron framed glass door
Installation
Floor, on adjustable legs
Flue connection
Top and back
Maximum firewood length
15" (39 cm)
Firewood diameter
3 to 6" (8 to 15 cm)
Pro 20 size
16.9"W x 20.1"D x 29.9 to 31.1"H (43 x 51 x 76 to 79 cm)
Pro 20 weight
116.8 lbs (53 kg); 204.8 lbs (92.9 kg) with stones
Pro 20 minimum room height
82" (209 cm)
Pro 20 ES size
17"W x 25.6"D x 30"H
Pro 20 ES weight
143.3 lbs (65 kg)
Pro 20 ES water tank
20 liters, on the front
Pro 20 ES minimum room height
83"
Pro 20 LS and RS size
23"W x 20"D x 30"H
Pro 20 LS and RS weight
132.3 lbs (60 kg)
Pro 20 LS and RS water tank
30 liters, fixed, on the left (LS) or right (RS) side
Pro 20 LS and RS minimum room height
81"
Pro 20 SL size
17"W x 28.7"D x 30"H (430 x 730 x 760 mm)
Pro 20 SL weight
137.8 lbs (62.5 kg); shipping weight with stones 225.8 lbs (102.4 kg)
Pro 20 SL feeding
Through the wall, from the next room
Pro 20 SL maximum firewood length
13.7" (350 mm)
Pro 20 SL minimum room height
81.1" (2060 mm)
Pro 20 Duo size
17"W x 20"D x 30"H
Pro 20 Duo weight
176.4 lbs (80 kg)
Pro 20 Duo feeding
Through the wall, with a glass fireplace door in the next room
Pro 20 Duo minimum room height
82"
Image: Harvia

What sets it apart

  • Steel body with a graphite black casing and a stainless steel front
  • Cast iron framed glass door so the fire shows in the room
  • Large stone compartment holding 88 lbs of sauna stones
  • Adjustable legs for a level stand on the floor
  • Flue connects at the top or the back
  • Water tank versions: 20 liters on the front (ES), 30 liters on the left (LS) or right (RS)
  • Through the wall versions (SL and Duo) are fed from the next room, keeping firewood out of the sauna
  • The Duo turns its feeding side into a glass fronted fireplace
  • Designed and made in Finland

In the kit from the maker

  • Sauna stove
  • Stove door
  • Ash box
  • Adjustable legs
  • Installation and operation manual

About this buildout.

The Pro 20 is a steel stove with a graphite black casing, a stainless steel front and a cast iron framed glass door, so you see the fire from the benches. It stands on adjustable legs, takes 88 lbs of sauna stones, and connects to the flue at the top or the back. Harvia lists it for a room volume of 283 to 706 cu. ft.

The Pro 20 ES carries a 20 liter water tank on the front. The Pro 20 LS and Pro 20 RS carry a fixed 30 liter tank on the left or the right side, which makes them wider than the standard stove.

The Pro 20 SL and the Pro 20 Duo are fed through the wall: the stove sits in the sauna and the firebox door opens into the next room, so firewood never comes into the hot room. The Duo has a stainless steel casing and a large glass door on that side, so the next room gets a fireplace.

Photographs

The maker’s photographs.

Images: Harvia

Questions

Questions about the Harvia Pro 20 Wood Sauna Stove.

What you are covered for

The standard behind it.

The Sauna Friend Standard

What comes with every sanctuary we build.

  • Sanctuary Builders
  • Sanctuary Approved
  • Local Service Guarantee

Reviewed by homeowners

Read what they say about the build.

5.0 on Google across 80+ verified reviews. Each review below links to the original on Google.

  • “David, the owner, worked with us to get a high quality sauna. David is very responsive, knowledgeable, honest and responsive. He will have your sauna delivered to your home. He will then assemble the sauna and remove all the packaging. I highly recommend purchasing a sauna from Sauna Friend.”
    Dennis DonovanFort Collins, CORead it on Google (opens in a new tab)
  • “Sauna Friends were exceptional! They fixed my sauna door, added flashing, and reinstalled my sauna roof. I looked for sauna-specific professionals to do these repairs so I could be confident they'd know what they're doing, and they did.”
    Jessmine AndersonColoradoRead it on Google (opens in a new tab)
  • “Worthy of 10 stars! Went above and beyond to ensure we had full understanding in everything: the sauna we purchased, the ordering, delivery, and setup. Absolutely love our sauna and worth every penny. David was incredibly knowledgeable and went out of his way to over-deliver. Highly recommend working with David!”
    Nicholas LoscalzoColoradoRead it on Google (opens in a new tab)
Talk to us

Four ways in. Pick the one that fits.

For instant answers

Call or text 720.780.4400

Texts start with Jarvis, our trained AI, for instant answers. Ask for a person any time.

A detailed answer

Request member pricing

Tell us about the build. We send a detailed quote within one business day, with our Sauna Prep Checklist.

Request member pricing
A conversation

Schedule a 15-minute call with David

For builds that need more than a form can capture. We talk through the space and the plan.

Schedule a call (opens in a new tab)
Questions

Email us

Questions on buildouts, electrical coordination, or timing. We read every message and reply.

support@saunafriend.com
We represent you, not the manufacturers.

Create Sanctuary.
Live Regenerated.

5.0 on Google across 80+ verified reviews

1 / 8

Harvia Pro 20 wood sauna stove with a graphite black casing, stainless front and glass door, studio shot on white

Harvia Pro 20 Wood Sauna Stove

Image: Harvia